Question

This year my age is a multiple of 7. Last year it was a multiple of 8. What is my present age ?

Answer 1

Present age is a multiple of 7.
$\begin{array}{cc}Presentage\left(inyears\right)& Agelastyear\left(inyears\right)\\ 7& 6\\ 14& 13\\ 21& 20\\ 28& 27\\ 35& 34\\ 42& 41\\ 49& 48\end{array}$
When present age is 49 years, last year's age is 48 years which is a multiple of 8.
$\therefore$ Present age = 49 years